import React, { useState } from "react"
import { Link, useNavigate } from "react-router-dom"
import { Card, Breadcrumb, Form, Button, Radio, DatePicker, Select, Modal, message } from "antd"
// 引入汉化包 时间选择器显示中文
import locale from "antd/es/date-picker/locale/zh_CN"
// 导入资源
import { Table, Tag, Space } from "antd"
import { EditOutlined, DeleteOutlined, ExclamationCircleOutlined } from "@ant-design/icons"
import img404 from "@/assets/error.png"
import { useChannel } from "@/hooks/useChannel"
import { useEffect } from "react"
import { deleteArticleApi, getArticleApi } from "@/api/article"

const { Option } = Select
const { RangePicker } = DatePicker

const Article = () => {
  const navigate = useNavigate()
  const { channelList } = useChannel()
  // 准备列数据
  // 定义状态枚举
  const status = {
    1: <Tag color="warning">待审核</Tag>,
    2: <Tag color="success">审核通过</Tag>
  }
  const columns = [
    {
      title: "封面",
      dataIndex: "cover",
      width: 120,
      render: cover => {
        return <img src={cover.images[0] || img404} width={80} height={60} alt="" />
      }
    },
    {
      title: "标题",
      dataIndex: "title",
      width: 220
    },
    {
      title: "状态",
      dataIndex: "status",
      // data - 后端返回的状态status 根据它做条件渲染
      // data === 1 => 待审核
      // data === 2 => 审核通过
      render: data => status[data]
    },
    {
      title: "发布时间",
      dataIndex: "pubdate"
    },
    {
      title: "阅读数",
      dataIndex: "read_count"
    },
    {
      title: "评论数",
      dataIndex: "comment_count"
    },
    {
      title: "点赞数",
      dataIndex: "like_count"
    },
    {
      title: "操作",
      render: data => (
        <Space size="middle">
          <Button type="primary" shape="circle" icon={<EditOutlined />} onClick={() => navigate(`/publish?id=${data.id}`)} />
          <Button type="primary" danger shape="circle" icon={<DeleteOutlined />} onClick={() => showDeleteConfirm(data)} />
        </Space>
      )
    }
  ]

  // 筛选功能
  // 1、准备参数
  const [reqData, setReqData] = useState({
    status: "",
    channel_id: "",
    begin_pubdate: "",
    end_pubdate: "",
    page: 1,
    per_page: 5
  })

  // 获取文章列表
  const [list, setList] = useState([])
  const [count, setCount] = useState(0)

  useEffect(() => {
    async function getArticleList() {
      const res = await getArticleApi(reqData)
      setList(res.data.results)
      setCount(res.data.total_count)
    }
    getArticleList()
  }, [reqData])

  // 2、获取筛选数据
  const onFinish = (formValue) => {
    // 3、把表单收集到数据放到参数中
    setReqData({ ...reqData, channel_id: formValue.channel_id, status: formValue.status, begin_pubdate: formValue.date[0].format("YYYY-MM-DD"), end_pubdate: formValue.date[1].format("YYYY-MM-DD") })
    // 4、重新拉取文章列表 + 渲染table逻辑重复的 - 复用
    // reqData依赖项发生变化 重复执行副作用函数
  }

  // 分页
  const onPageChange = (page) => {
    // 修改参数依赖项 引发数据的重新获取列表渲染
    setReqData({ ...reqData, page })
  }
  
  // 删除
  const onConfirm = async (data) => {
    try {
      await deleteArticleApi(data.id)
      message.success("删除文章成功")
      setReqData({ ...reqData })
    } catch (error) {
      message.error("删除文章失败")
    }
  }

  const showDeleteConfirm = (data) => {
    Modal.confirm({
      title: "删除文章",
      icon: <ExclamationCircleOutlined />,
      content: "确认要删除当前文章吗？",
      okText: "确认",
      cancelText: "取消",
      onOk: () => onConfirm(data)
    })
  }

  return (
    <div>
      <Card
        title={
          <Breadcrumb items={[
            { title: <Link to={"/"}>首页</Link> },
            { title: "文章列表" },
          ]} />
        }
        style={{ marginBottom: 20 }}
      >
        <Form initialValues={{ status: "" }} onFinish={onFinish}>
          <Form.Item label="状态" name="status">
            <Radio.Group>
              <Radio value={""}>全部</Radio>
              <Radio value={0}>草稿</Radio>
              <Radio value={2}>审核通过</Radio>
            </Radio.Group>
          </Form.Item>

          <Form.Item label="频道" name="channel_id">
            <Select
              placeholder="请选择频道"
              style={{ width: 120 }}
            >
              {channelList.map(item => <Option key={item.id} value={item.id}>{item.name}</Option>)}
            </Select>
          </Form.Item>

          <Form.Item label="日期" name="date">
            {/* 传入locale属性 控制中文显示*/}
            <RangePicker locale={locale}></RangePicker>
          </Form.Item>

          <Form.Item>
            <Button type="primary" htmlType="submit" style={{ marginLeft: 40 }}>
              筛选
            </Button>
          </Form.Item>
        </Form>
      </Card>
      {/* 表格区域 */}
      <Card title={`根据筛选条件共查询到 ${count} 条结果：`}>
        <Table rowKey="id" columns={columns} dataSource={list} pagination={{ total: count, pageSize: reqData.per_page, onChange: onPageChange }} />
      </Card>
    </div>
  )
}

export default Article